Remove ansible from requirements.txt

[rusko124]

At the moment I was trying to install screenly-ose(with https://www.screenly.io/install-ose.sh) on
RASPBIAN LITE, but it failed.
The reason is this problem #924.
At the moment users also have this problem if choose develop or production branch in script( expiremental branch haven't ansible in requirements files).

[vpetersson]

@rusko124 Can you explain why this fix works? You're simply moving Ansible from the regular requirements file to the dev one.

[rusko124]

@vpetersson
Oh sure. This script before the start of the ansible-playbook, installs the ansible with the specified version. Then the ansible itself installs another version of the ansible from the requirements.txt, which leads to various errors.
Previously, there were no such errors, since the ansible in script and the ansible in requirements.txt were the same version.
Adding ansible to requirements.dev.txt is necessary for travis cl. Also travis cl no longer indicates the vulnerability of the ansible dependencies(#878).

[vpetersson]

Oh sure. This script before the start of the ansible-playbook, installs the ansible with the specified version. Then the ansible itself installs another version of the ansible from the requirements.txt, which leads to various errors.

A better solution would be to make them consistent IMHO.

Adding ansible to requirements.dev.txt is necessary for travis cl. Also travis cl no longer indicates the vulnerability of the ansible dependencies(#878).

Yes, that's ecause it doesn't detect it. Not that it isn't still an issue.

[rusko124]

A better solution would be to make them consistent IMHO.

I do not quite understand why you need to install 2 times ansible, if ansible participates only for installation. And the requirements.txt itself directly for work screenly's processes.

Yes, that's ecause it doesn't detect it. Not that it isn't still an issue.

If we don't add ansible to requirements.dev.txt, we also get a travis cl error.